Speaker



FIG. 1 is a perspective view of the front, bottom and one side showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view of said one side thereof, the opposite side being a mirror image thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The elements shown in broken lines in FIG. 5 are not considered part of the claimed design. 

The ornamental design for a speaker, as shown and described. 